<template>
  <div class="icon-dialog">
    <el-dialog
      v-bind="$attrs"
      width="980px"
      :modal-append-to-body="false"
      @open="onOpen"
      @close="onClose"
    >
      <template #header>
        <div>
          选择图标
          <el-input
            v-model="key"
            size="mini"
            :style="{ width: '260px' }"
            placeholder="请输入图标名称"
            prefix-icon="el-icon-search"
            clearable
          />
        </div>
      </template>
      <ul ref="iconWrap" class="icon-ul">
        <li
          v-for="icon in iconList"
          :key="icon"
          :class="active === icon ? 'active-item' : ''"
          @click="onSelect(icon)"
        >
          <i :class="icon"></i>
          <div>{{ icon }}</div>
        </li>
      </ul>
    </el-dialog>
  </div>
</template>

<script setup>
import { ref, watch, onMounted, nextTick } from "vue";
import iconData from "../utils/icon.json";

const props = defineProps({
  current: String,
});

const emit = defineEmits(["select", "update:visible"]);

const originList = iconData.map((name) => `el-icon-${name}`);
const iconList = ref(originList);
const active = ref(null);
const key = ref("");

watch(key, (val) => {
  if (val) {
    iconList.value = originList.filter((name) => name.indexOf(val) > -1);
  } else {
    iconList.value = originList;
  }
});

const onOpen = () => {
  active.value = props.current;
  key.value = "";
  scrollToActive();
};

const onSelect = (icon) => {
  active.value = icon;
  emit("select", icon);
  emit("update:visible", false);
};

const scrollToActive = () => {
  nextTick(() => {
    const $activeItem = active.value
      ? document.getElementsByClassName("active-item")[0]
      : document.querySelector(".icon-wrap").firstChild;
    $activeItem &&
      $activeItem.scrollIntoView &&
      $activeItem.scrollIntoView({ behavior: "smooth" });
  });
};

const onClose = () => {
  emit("update:visible", false);
};
</script>

<style lang="scss" scoped>
.icon-ul {
  margin: 0;
  padding: 0;
  font-size: 0;
  li {
    list-style-type: none;
    text-align: center;
    font-size: 14px;
    display: inline-block;
    width: 16.66%;
    box-sizing: border-box;
    height: 108px;
    padding: 15px 6px 6px 6px;
    cursor: pointer;
    overflow: hidden;
    &:hover {
      background: #f2f2f2;
    }
    &.active-item {
      background: #e1f3fb;
      color: #7a6df0;
    }
    > i {
      font-size: 30px;
      line-height: 50px;
    }
  }
}
.icon-dialog {
  :deep(.el-dialog) {
    border-radius: 8px;
    margin-bottom: 0;
    margin-top: 4vh !important;
    display: flex;
    flex-direction: column;
    max-height: 92vh;
    overflow: hidden;
    box-sizing: border-box;
    .el-dialog__header {
      padding-top: 14px;
    }
    .el-dialog__body {
      margin: 0 20px 20px 20px;
      padding: 0;
      overflow: auto;
    }
  }
}
</style>
